Legal estoppel

Definition and stakes

by John Marshall,  Blight's v. Rochester — Opinion of the Court

“ It is very certain, that these sales do not create a legal estoppel. The defendant has executed no deed to prevent him from averring and proving the truth of the case. If he is bound in law to admit a title which has no existence in realty, it is not on the doctrine of estoppel that he is bound. It is because, by receiving a conveyance of a title which is deduced from Dunlap, the moral policy of the law will not permit him to contest that title. ”
Source: Wikisource

Portrait of James Moore Wayne James Moore Wayne,  McMicken v. Carey — Opinion of the Court

“ It is said by the counsel for the plaintiff that a dedication is founded on an estoppel against claiming property which has been dedicated, while a charity presumes a grant. But whether it be called an estoppel or a preumed grant is quite immaterial; the result is the same, and the principle of favor to the object is the same, and the trust in both cases is preserved without a legal grantee on precisely the same ground of favor in equity. ”
Source: Wikisource

Portrait of Joseph Story Joseph Story,  Morris v. Harmer's Heirs — Opinion of the Court

“ The only difficulty is, that the bill avers the title of the plaintiffs to be an equitable instead of a legal title. But as all the facts are stated truly in the bill, it is nothing more than a mistake of law. If the defendants could rely upon that bill and decree as an estoppel, it must be, because the facts therein stated are repugnant to the present title asserted by them. ”
Source: Wikisource

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